CN212733335U - Washing tank and washing system for alumina washing section - Google Patents
Washing tank and washing system for alumina washing section Download PDFInfo
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- CN212733335U CN212733335U CN202021509228.0U CN202021509228U CN212733335U CN 212733335 U CN212733335 U CN 212733335U CN 202021509228 U CN202021509228 U CN 202021509228U CN 212733335 U CN212733335 U CN 212733335U
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- washing
- washing tank
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- 238000005406 washing Methods 0.000 title claims abstract description 207
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 238000003756 stirring Methods 0.000 claims abstract description 23
- 239000000498 cooling water Substances 0.000 claims abstract description 10
- 238000013019 agitation Methods 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 12
- 239000007789 gas Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract description 4
- 229910052708 sodium Inorganic materials 0.000 abstract description 4
- 239000011734 sodium Substances 0.000 abstract description 4
- 239000002002 slurry Substances 0.000 abstract description 3
- 239000002918 waste heat Substances 0.000 abstract description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229910001388 sodium aluminate Inorganic materials 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The utility model discloses a washing tank and washing system for alumina washing workshop section, the washing tank includes the washing tank body, a plurality of pneumatic stirring gas outlets are evenly arranged along the same circumference below the side wall of the washing tank body, the outer end of each pneumatic stirring gas outlet is connected with an air inlet pipe, the arrangement of the pneumatic stirring gas outlets enables the slurry in the washing tank to be stirred clockwise or anticlockwise, no deposited material is left at the bottom of the washing tank, and the washing effect is improved; the washing system adopts a two-stage reverse washing system, and the washing water carries out reverse washing on the materials, so that the washing water is recycled, the washing yield of the alumina is greatly improved, and the yield is improved; the washing times and the effective washing time are increased, the washing effect is improved, and the sodium content in the aluminum oxide is reduced; in addition, because the washing water used by the washing system is the cooling water of the air compressor, the waste heat of the cooling water is fully utilized, the energy is saved, and the water consumption is saved.
Description
[ technical field ] A method for producing a semiconductor device
The utility model belongs to the technical field of aluminium oxide production, concretely relates to a wash tank and washing system for aluminium oxide washing workshop section.
[ background of the invention ]
The alkaline process for producing alumina is to treat bauxite with alkali (sodium hydroxide or sodium carbonate) to convert the alumina in the ore into sodium aluminate solution, the iron, titanium and other impurities in the ore and most of the silicon become insoluble compounds and enter into residue (red mud), the residue is separated from the solution, the aluminum hydroxide is separated from the purified sodium aluminate solution, the aluminum hydroxide is separated from the mother liquor, washed and roasted to obtain the alumina product. Part of sodium in the prepared alumina product exists among crystal lattices, the raw material is coarsely ground to 30-40 mu m, and hot pure water is added for washing to remove part of crystal lattice alkali; however, the washing tank in the prior art has a simple structure, coarse grinding materials are easy to settle in the washing process, the washing is insufficient, the washing system has a short effective washing time due to the fact that the number of washing times is small, and the alumina after the washing is still rich in alkali, so that the requirement of electrical filler alumina cannot be met; and the washing water can not be recycled, so that the product yield is low and the waste is serious.
[ Utility model ] content
The utility model discloses a solve among the prior art sink and washing system washing insufficient, the phenomenon that sodium content is high, alumina output is low in the alumina product provides a sink and washing system for alumina washing workshop section.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a washing tank for an alumina washing section comprises a washing tank body, wherein the bottom of the washing tank body is provided with a bottom outflow port, and the top of the washing tank body is open; a plurality of pneumatic stirring gas outlets are uniformly arranged along the same circumference below the inner side wall of the washing tank body, and the outer end of each pneumatic stirring gas outlet is connected with a section of fixed-direction gas inlet pipe.
Preferably, the pneumatic stirring air outlets are provided with at least three.
Preferably, the vertical distance between the pneumatic stirring air outlet and the bottom of the washing tank body is 100-200 mm, and more preferably 150 mm.
Preferably, the diameter of the pneumatic stirring air outlet is 20-40 mm, and more preferably 30 mm.
Preferably, the length of the air inlet pipe is 100-200 mm, and more preferably 150 mm.
Preferably, the intake pipe is 40 ~ 50 with the tangent angle of sink body lateral wall horizontal direction, further preferred 45, and all intake pipe syntropies set up, and all intake pipes set up along clockwise or anticlockwise promptly for thick liquids can be followed clockwise or anticlockwise stirring in the sink.
Preferably, the air inlet pipe is obliquely arranged downwards, the included angle between the air inlet pipe and the vertical direction of the side wall of the washing tank body is 50-70 degrees, the further optimization is 60 degrees, the air flow purging area is larger at the moment, and the anti-deposition effect is better.
It is another object of the present invention to provide a washing system for an alumina washing section comprising the above-described wash tank.
Preferably, the washing system is a two-stage reverse washing system, and the number of the washing tanks is two, namely a first-stage washing tank and a second-stage washing tank; the washing system also comprises an air compressor, and an air outlet of the air compressor is respectively connected with air inlet pipes on the first-stage washing tank and the second-stage washing tank through air outlet pipelines; the underflow outlet of the first-stage washing tank is connected with the feed inlet of the second-stage washing tank through a pipeline, the washing water outlet of the second-stage washing tank is connected with the water inlet of the first-stage washing tank through a pipeline, the underflow outlet of the second-stage washing tank is a finished product discharge hole, the washing water outlet of the first-stage washing tank is connected with a circulating water tank through a pipeline, and the water inlet of the second-stage washing tank is connected with a cooling water outlet of an air compressor.
Preferably, the underflow outlet of the primary washing tank is connected with the feed inlet of the secondary washing tank through a diaphragm pump;
preferably, the underflow of the secondary wash tank is output by a diaphragm pump.
Preferably, the wash water outlet of second grade sink passes through a buffer tank of water pump connection, the buffer tank passes through the water pump to be connected with the water inlet of one-level sink, and the wash water of second grade sink gets into the buffer tank earlier promptly, gets into the one-level sink via the buffer tank again.
Compared with the prior art, the utility model discloses following beneficial effect has:
the arrangement of the pneumatic stirring gas outlet and the gas inlet pipe on the washing tank of the utility model ensures that the sweeping gas flow can stir the slurry in the washing tank clockwise or anticlockwise, thereby ensuring that no deposition material is left at the bottom of the washing tank during washing and improving the washing effect;
the washing system of the utility model adopts a two-stage reverse washing system, the washing water carries out reverse washing on the materials, the washing water of the second-stage washing tank is used as the washing water of the first-stage washing tank, and the washing water of the first-stage washing tank returns to the circulating water tank for recycling, so that the washing water is reused, the washing yield of the alumina is greatly improved, and the yield is improved; the washing times and the effective washing time are increased, the washing effect is improved, and the sodium content in the alumina product is reduced; in addition, because the washing water used by the secondary washing tank is the cooling water of the air compressor, the waste heat of the cooling water is fully utilized, the energy is saved, and the water consumption is saved.
[ description of the drawings ]
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a top view of a sink according to the present invention;
FIG. 2 is a side view of the sink of the present invention;
FIG. 3 is a schematic diagram of a washing system according to the present invention;
wherein, 1-washing tank body; 101-underflow outlet; 2, an air inlet pipe; 3, an air compressor; 4-first-stage washing tank; 401-underflow outlet of first-stage washing tank; 402-water inlet of the first-stage washing tank; 403-a washing water outlet of the first-stage washing tank; 5-a secondary washing tank; 501-an underflow outlet of a secondary washing tank; 502-feed inlet of secondary washing tank; 503-a wash water outlet of the secondary wash tank; 504-water inlet of the secondary washing tank; 6, a water pump; 7-a buffer tank; 8-diaphragm pump; 9-air outlet pipe; 10-control valve.
[ detailed description ] embodiments
To make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described below with reference to the accompanying drawings and specific embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Example 1
As shown in fig. 1 and 2, the present embodiment provides a washing tank for an alumina washing section, the washing tank comprises a washing tank body 1, the bottom of the washing tank body 1 is provided with an underflow outlet 101, and the top of the underflow outlet 101 is open and can be used as a feed inlet and a water outlet; at least three pneumatic stirring air outlets are uniformly arranged on the inner side wall of the washing tank body 1 along the same circumference at positions 100-200 mm away from the bottom of the washing tank body 1; one section fixed intake pipe of direction 2 is connected in the outside of every pneumatic stirring gas outlet, the length of intake pipe 2 is 100 ~ 200mm, and all intake pipe syntropies set up, can follow clockwise setting promptly, also can follow anticlockwise setting.
The included angle between the air inlet pipe 2 and the tangent line of the side wall of the washing tank body in the horizontal direction is 40-50 degrees, so that slurry in the washing tank can be stirred in a clockwise or anticlockwise rotating manner; the air inlet pipe 2 is obliquely arranged downwards, and an included angle between the air inlet pipe 2 and the vertical direction of the side wall of the washing tank body is 50-70 degrees, the air flow purging area is larger at the moment, and the anti-deposition effect is better.
Preferably, the diameter of the pneumatic stirring air outlet is 20-40 mm.
Example 2
As shown in fig. 3, the present embodiment provides a washing system for an alumina washing section, wherein the washing system is a two-stage reverse washing system, and comprises an air compressor 3, a first-stage washing tank 4 and a second-stage washing tank 5, and the first-stage washing tank 4 and the second-stage washing tank 5 both use the washing tank described in embodiment 1;
two air outlets of the air compressor 3 are respectively connected with an air outlet pipe 9, and each air outlet pipe 9 is divided into three branches by a four-way pipe and is respectively connected with the air inlet pipes 2 on the first-stage washing tank and the second-stage washing tank;
an underflow outlet 401 of the first-stage washing tank is connected with a feed inlet 502 of the second-stage washing tank through a pipeline by using a diaphragm pump 8, a washing water outlet 503 of the second-stage washing tank is connected with a water inlet 402 of the first-stage washing tank through a pipeline by using a water pump 6, an underflow outlet 501 of the second-stage washing tank is a finished product discharge port, underflow in the second-stage washing tank is output through the diaphragm pump to obtain a finished product, a washing water outlet 403 of the first-stage washing tank is connected with a circulating water tank through a pipeline by using the water pump 6, and a water inlet 504 of the second-stage washing tank is connected with a cooling water outlet.
The washing system further comprises a control valve 10, wherein the control valve 10 is respectively arranged at the front ends of the water pump on the pipeline and the diaphragm pump, and one end of the air outlet pipe 9 close to the air compressor.
Preferably, the washing water outlet 503 of the secondary washing tank is connected with a buffer tank 7 through a water pump 6, and the buffer tank 7 is connected with the water inlet 402 of the primary washing tank through the water pump, i.e. the washing water of the secondary washing tank firstly enters the buffer tank 7 and then enters the primary washing tank 4 through the buffer tank 7.
Washing system's washing process: placing coarse grinding materials in a first-stage washing tank 4, adding pure water (cooling water of an air compressor or water stored in a buffer tank can be added directly at an open position of the top) into the first-stage washing tank 4, opening pneumatic stirring in the first-stage washing tank 4, washing materials in the first-stage washing tank 4, after washing is finished, closing the pneumatic stirring, after the materials are precipitated, opening a diaphragm pump 8 between the first-stage washing tank 4 and a second-stage washing tank 5, and pumping underflow in the first-stage washing tank 4 into the second-stage washing tank 5 through the diaphragm pump 8; introducing cooling water (about 60 ℃) of an air compressor into the secondary washing tank 5, closing the water pump and the diaphragm pump, opening pneumatic stirring in the secondary washing tank 5, washing and pneumatically stirring materials in the secondary washing tank 5, closing the air compressor after washing is finished, pumping the washing water into a buffer tank 7 through the water pump 6 after the materials are precipitated, and pumping the washing water in the buffer tank 7 into a primary washing tank 4 through the water pump 6 in front of the primary washing tank; and then opening the pneumatic stirring in the first-stage washing tank 4, washing and stirring the materials in the first-stage washing tank 4, after the washing is finished, closing the air compressor, driving the bottom flow into the second-stage washing tank 5 through the diaphragm pump 8 again after the materials are settled, introducing cooling water of the air compressor for washing, driving the washing water in the first-stage washing tank 4 into the circulating water tank for recycling, and outputting the settled bottom flow in the second-stage washing tank 5 through the diaphragm pump 8 to obtain a finished product.
Claims (10)
1. A washing tank for an alumina washing section comprises a washing tank body, wherein the bottom of the washing tank body is provided with a bottom outflow port, and the top of the washing tank body is opened to serve as a feeding hole, a water inlet and a water outlet; the washing tank is characterized in that a plurality of pneumatic stirring air outlets are uniformly arranged along the same circumference below the inner side wall of the washing tank body, and the outer side of each pneumatic stirring air outlet is connected with one section of air inlet pipe fixed in the direction.
2. The wash tank of claim 1, wherein at least three pneumatic agitation air outlets are provided.
3. The washing tank as claimed in claim 2, wherein the vertical distance from the pneumatic stirring air outlet to the bottom of the washing tank body is 100 to 200 mm.
4. The wash tank of claim 3, wherein the pneumatic agitation air outlet has a diameter of 20 to 40 mm.
5. The washing tank as claimed in claim 4, wherein the air inlet pipe and the tangent line of the side wall of the washing tank body in the horizontal direction form an included angle of 40-50 degrees, and all the air inlet pipes are arranged in the same direction, namely all the air inlet pipes are arranged in the clockwise direction or the anticlockwise direction.
6. The washing tank as claimed in claim 5, wherein the air inlet pipe is arranged obliquely downwards, and the included angle between the air inlet pipe and the vertical direction of the side wall of the washing tank body is 50-70 degrees.
7. A washing system for an alumina washing section, characterized by comprising a wash tank according to any one of claims 1 to 6.
8. The washing system according to claim 7, wherein the number of the washing tanks is two, namely a first-stage washing tank and a second-stage washing tank, the washing system further comprises an air compressor, and an air outlet of the air compressor is connected with air inlet pipes on the first-stage washing tank and the second-stage washing tank through air outlet pipelines respectively; the underflow outlet of the first-stage washing tank is connected with the feed inlet of the second-stage washing tank through a pipeline, the washing water outlet of the second-stage washing tank is connected with the water inlet of the first-stage washing tank through a pipeline, the underflow outlet of the second-stage washing tank is a finished product discharge hole, the washing water outlet of the first-stage washing tank is connected with a circulating water tank through a pipeline, and the water inlet of the second-stage washing tank is connected with a cooling water outlet of an air compressor.
9. The washing system as recited in claim 8 wherein the underflow outlet of the primary wash tank is connected to the feed inlet of the secondary wash tank by a diaphragm pump.
10. The washing system as claimed in claim 8, wherein the washing water outlet of the secondary washing tank is connected to a buffer tank by a water pump, and the buffer tank is connected to the water inlet of the primary washing tank by a water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021509228.0U CN212733335U (en) | 2020-07-27 | 2020-07-27 | Washing tank and washing system for alumina washing section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021509228.0U CN212733335U (en) | 2020-07-27 | 2020-07-27 | Washing tank and washing system for alumina washing section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212733335U true CN212733335U (en) | 2021-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021509228.0U Active CN212733335U (en) | 2020-07-27 | 2020-07-27 | Washing tank and washing system for alumina washing section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212733335U (en) |
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2020
- 2020-07-27 CN CN202021509228.0U patent/CN212733335U/en active Active
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Denomination of utility model: A washing tank and washing system for the alumina washing section Effective date of registration: 20231222 Granted publication date: 20210319 Pledgee: Postal Savings Bank of China Co.,Ltd. Tai'an Mount Taishan District Sub branch Pledgor: TAIAN SHENG YUAN POWDER Co.,Ltd. Registration number: Y2023980073568 |